General Knowledge Quiz for Monday, 16 January 2012

A new general knowledge quiz is available every day. Try today's quiz or work through our archive of daily and themed quizzes.

Question 1: The acronym "B.A.S.E.", as used in B.A.S.E jumping, stands for four categories of fixed objects from which one can jump, including buildings, antennae and earth (cliff). Which of these is the other?